Tool ·
Draw an AWS architecture on an interactive diagram — VPCs, subnets and 40 services, from web tiers to data lakes, warehouses, stream processing and search — configure each service, see a rough monthly cost, and download a TypeScript AWS CDK app that synthesises.
Tool ·
Build an Elasticsearch analyzer from char filters, a tokenizer and token filters and watch the token stream change stage by stage — terms, positions, offsets, types and position lengths, drawn as a token graph — then index documents to see the postings, field-length norms and phrase/slop matching, and copy the _analyze request and index settings.
Tool ·
An animated, step-by-step Elasticsearch (and OpenSearch) cluster in your browser: murmur3 routing, primaries and replicas, the indexing buffer, translog, refresh, flush and segment merging inside every shard, query-then-fetch search, node failures, master elections, split brain and shard sizing — with guided scenarios and a REST console.
Tool ·
Build Elasticsearch and OpenSearch queries in a form or as JSON — each edits the other — and see them explained in plain English (query vs filter context, minimum_should_match, the Lucene query they become), linted for slow or surprising patterns, and run against a sample index in your browser with hits, scores, explanations, highlights and aggregations; optionally send them read-only to your own cluster.
Tool ·
See why documents rank where they do: BM25 term by term like Elasticsearch's _explain, with k1 and b sliders that re-rank live, classic TF-IDF side by side, multi-field strategies and boosts, function_score (field_value_factor, decay curves, a recency script), and hybrid lexical + vector ranking with reciprocal rank fusion or a normalised linear blend.
Article ·
What it takes to build a complete social network as one coherent app — feed ranking, social graph, search, messaging — with Spring Boot, React, PostgreSQL, OpenSearch, and a Rust graph cache.
Project ·
A full-featured social network — feeds, profiles, friends, groups, pages, messages, search, and an admin dashboard — built on Spring Boot, React, PostgreSQL, OpenSearch, and my Rust graph cache.